Reflecting-mirror



(No Model.)

0, WEIDT. Reflecting Mirror.

No. 228,706. Patented June 8,1880.

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' ATTORNEYS:

UNITED STATES PATENT OFFICE.

CHARLES WEIDT, OF POMEROY, OHIO.

REFLECTlNG-MIRROR.

SPECIFICATION forming part of Letters Patent No. 228,706, dated June 8,1880.

Application filed April 8, 1880.

To all whom it may concern;

Be it known that I, CHARLES WEIDT, of Pomeroy, in the county of Meigsand State of Ohio, have invented certain new and useful Improvements inReflectin Mirrors; and I do hereby declare that the following is a full.clear, and exact description of the invention, which will enable othersskilled in the art to which it appertains to make and use the same,

reference being had to the accompanying drawings, which form a part ofthis specification, and in which- Figure l is a front view. Fig. 2 is aside elevation, and Fig. 3 is a diametrical horizontal section of thetwo mirrors constituting the reflector.

Similar letters of reference indicate correspondin g parts in all thefigures.

My invention has relation to that class of reflectors which are placedoutside of a window in the open air, for the purpose of enabling thosewithin the house to observe, with out opening the window, what is goingon up or down the street, or what persons are approaching the house fromeither side; and it consists in an improved construction of the mirrorframes, substantially as hereinafter more fully set forth.

My improved reflecting-mirror consists of two separate mirrors, A A,which are of circular shape and united edgewise, as usual, at an angleof about ninety degrees, by a triangular block, B, interposed betweenthe meeting-edges of the two mirror-frames, as more clearly shown inFig. 3 of the drawings. This block is made with a sleeve or socket, 1),upon the face of which is soldered a nut, c, which receives a set-screw,d, by means of which the reflector may be adjusted vertically upon thearm 0, which is inserted through the socket b.

Each of the circular mirrors A A is framed in a circular sheet-metal boxor casing, DD,

' of a shallow conical shape, and provided with a series of concentricbeads or corrugations, e e, surrounding its apex or center f. Thesecorrugations or circular ribs serve to brace and strengthen the casings,which may thus be made of very thin and inexpensive sheet metal, and yetpossess the requisite degree of strength and durability.

An air-space, g, is left between the back of the mirror and conical backof the box or casing, into which it is inserted, and moisture isprevented from entering this space by cement- (No model.)

ing the circular rim or periphery of the mirror into the box with anykind of suitable insoluble cement that will harden by exposure to theair, as shown at h.

The projecting rim of the mirror frames or casings D D may be'ornamented by castmetal ornaments E, of any desired design, and thereflector is supported in its proper position outside the window bymeans of the bent arm or support 0, to which reference has been alreadymade, so that each of the mirrors will be presented to the window at anangle of about forty-five degrees.

By placing the mirrors in hollow conical and concentrically-corrugatedcasings in the manner described, and sealing their edges airtight toprevent ingress of moisture, the glass will not dew orbecome discolored,as where this is backed direct, and without any intervening air-space,upon a wooden or metallic back; nor will the glasses become loosened intheir frames by the expansion and contraction of these, caused (exposedas they are in the open air all the year round) by atmospherical andmeteorological changes, because such expansion and contraction will beequalized or taken up, as it were, by the circular and concentriccorrugations c e 0, so that my improved reflector will be in goodworking order all the year round and under all conditions andcircumstances to which it may be subjected.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States- The herein-describedreflecting-mirror for windows, composed of two circular sheet-metalcasings, D D, of shallow conical form, corrugated or ribbedconcentrically at e c e, and provided each with a circular mirror, A A,sealed air-tightwithin its proper casing by a peripherical band ofcement, h, the said casings, with their mirrors, being united to eachother edgewise at a proper angle and provided with means for theirattachment to the window sill or casing, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

CHARLES WEIDT.

